It is in the interests of our citizens to have talent flow into the US instead of flowing out. But that wasn't really my point.

My point was people who have benefitted from our country's historic immigration practices are decrying the continuation of those practices.

'Continuation' is inaccurate - your country's historic immigration practices began with "free White persons of good character" [1], and were effectively 'whites only' until 1965 [2]. But the 'nation of immigrants' rhetoric omits this.

Those are the practices they probably benefited from.

[1] https://en.wikipedia.org/wiki/Naturalization_Act_of_1790

[2] https://en.wikipedia.org/wiki/Immigration_and_Nationality_Ac...